Suction grinding and polishing machine



A. WEISS.

SUCTION GRINDING AND POLISHING MACHINE.

APPLICATION FILED MAR. 8- 1920.

I Patented Mar. 7,1922.

///Z/// W/w a r 6 M/ M UNITED. STATES PATENT OFFICE.

' ABRAHAI WEISS, OF NEW YORK, N. .Y.

SUCTION GRINDING AND POLISHING MACHINE To all whom it may concern: I

Be it known that I, ABRAHAM Wales, a

citizen of the United States, and a resident of New York, in the countyand State of New York, have, invented certain new and usefulImprovements in Suction Grinding and Polishing Machines, of which thefollowing is a specification.

This invention has for one'of its objects to provide a perforateabrading surface for finishing articles particularly the soles and heelsof leather shoes by grinding the same smooth and freefrom roughness orirregularities, the surface taking'the form of a roll, or wheel as maybe most conveniently used.

Another object is to provide a perforate driver for the abrading elementused, the driver being of hollow construction and engaged with a suctiondevice .whereby the dust and particles removed from the article aredrawn in and carried away, relieving the air and surroundings fromunhealthy and filthy conditions usually attendant upon such operations.p a

These objects are attained by'the novel construction and combination ofparts hereinafter described and shown in the accompan ing drawings,forming a material part of t is disclosure, and in which Figure 1 is afront elevational view of an abrasive roll and connections made in ac-.cordance with the invention.

vFigure 2 is a longitudinal sectional view taken through the center ofthe same.

Figure 3 is a transverse sectional view taken through the roll, benchand guard.

Figure 4 is a fragmentary 'plan view of the roll covering.

Referring to Figures 1 to 3 of the drawings in detail, the numeral 50designates a hollow shaft adapted for rotation in bearings (not shown)and provided at one end with a conical enlargement 51 rotatable in asleeve 52 in which is threaded an ada ter;

55 through which pass cotter pins63 or like fastenings, the same passingentirely Specification of Letters Patent.

Patented Mar. '7, 1922.

Application filed, March 8, 1920. Serial No. 364,132.

through the shaft and spread at their lower ends as indicated, the drumbeing so located on the shaft as to enclose the slots 58. r

A plurality of staggered or offset openings 64: are formed through theperipheral wall of the drum, which also contains a longitudinal undercutslot 65 to receive the abutting ends of a strip of abrasive material, assand-paper, emery-cloth or the like 66 wrapped tightly and smoothlyaround the drum, the ends being secured by a wedge 67 or like fastener.I This abrasive stri 66 contains a plurality of openings 68, which areadjusted and caused to register with the openings 64;, thus providing aplurality of clear unobstructed passages leadlng to the interior of thedrum and from thence through the slots 58 to the interior of the hollowshaft so that all dust particles are removed as vto be operated upon tothe face of the-revolvin drum.

Having thus described my invention, explained its manner of operationand construction, what I claim as new and desire to secure by LettersPatent, is

1. An abrading device. comprising in combination, a hollow shaft engagedwith a suction means, a drum fixed on said shaft communicatin with theinterior, said drum having a per orate periphery containingalongitudinal slot, a flat strip ofabrasivematerial containingperforations registerable with the perforations in said drum, and meansfor securing the ends of said strip within the slot contained in thedrum.

2. An abradin device comprising in combination, a ho low shaftengagedwith a suction means, said shaft having openings through its walls, aperforate drum removably secured to said shaft enclosing the mentionedopenings, a perforate sheet of abrasive material covering said drum, andmeans for detachably engaging said covering at its ends to said drum.

3. An 'abrading device comprising in combination, a hollow shaftrotatably mounted, a flexible tube'engaged at one end of said shaftleading to a suction chamber, said shaft containing a plurality ofgrouped phery and containing an undercut longitudinal slot, means forremovably engaging said drum to said shaft to cover the mentionedopenings, a perforate strip of abrasive material removably envelopingsaid drum, the perforations in said strip and drum being'in register,and a key for securing the ends of said strip in the slot of said 10drum.

4. An abrading device comprising a perforated drum, suction connectionwith said drum, a band of abrasive material containing perforations,means for detachably Securing said band to the drum hubs at the ends ofsaid drum, a hollow shaft communieating with the interior of the drum,and means for removably engaging said drum to said shaft.

In testimony whereof I have signed my name to this specification.

ABRAHAM WEISS.

